TW200639887A - Parallelepiped type condenser microphone - Google Patents

Abstract

A parallelepiped type condenser microphone wherein a sound hole is formed on a PCB is disclosed. The condenser microphone comprises a case having an open surface and a surface and formed in a square box shape, a metal ring insertable into the case, a back plate formed in a disk shape and having a sound hole therethrough, a thin spacer formed in a ring shape, a cylindrical insulating ring having an open top and bottom portions, a diaphragm member insertable into the insulating ring and opposing to the back plate, and the space being positioned between the diaphragm member and he back plate, an annular conductive ring for electrically connecting the diaphragm member to a printed circuit board (PCB), and the PCB formed in the square plate shape, having components (IC, MLCC) mount a surface of a PCB and projecting terminals formed on the other surface thereof, and having a sound hole formed in a center portion thereof. Here, the metal ring, the back plate, the spacer, the insulating ring, the diaphragm member, the conductive ring, and the PCB are sequentially arranged in the case and than the condenser microphone is assembled by curling an end of the case. Thus, according to the condenser microphone, because a direction of the components can be confirmed during a process of a surface mounting device SMD), two or more components can be easily engaged each other. Accordingly, this can prevent connection surfaces of connection terminals of a main PCB and connection terminals of the condenser microphone from being deviated, and also decrease a failure of connection that may be resulted from change of connection or direction (polarity) of the connection terminals.